| Summary: | 碩士 === 國立中山大學 === 電機工程學系研究所 === 101 === The research of this thesis is mainly focused on automotive electronics including two topics, a Receiver (Rx) with over-voltage protection for FlexRay systems and an 8:1 high-voltage analog multiplexer (HV MUX) for Battery Management Systems (BMS) of Electric Vehicles (EVs).
The first topic discloses a Receiver with over-voltage protection for FlexRay systems, which is a networking standard for automotives. The proposed design is complied with the FlexRay electrical physical layer specification V3.0.1. The Receiver provides a data rate of 10 Mbps with -10 V ~ +15 V input common mode voltage (uCM) operating in the range of -40 °C ~ +150 °C. An over-voltage protection circuit is included in this Receiver, which is capable of rejecting over-voltage surges up to ±60 V. This design was implemented using TSMC 0.18 μm CMOS HV mixed-signal based generationⅡBCD technology.
The second topic presents an 8:1 high-voltage analog multiplexer for Battery Management Systems. This design is a HV MUX for battery voltage measurement systems, which can detect the battery voltages from a battery module. In this thesis, the testing vehicle is a battery module composed of 8 Li-ion batteries in series. The operating voltage range for each Li-ion battery is 2 V ~ 3.65 V. Thus, the highest input voltage for this HV MUX is 29.2 V, and the output range is 1 V ~ 2 V. HV switches and HV subtractors are also proposed to resolve the high input voltage problem of HV MUX. Finally, a battery voltage measurement system was realized by integrateing this 8:1 HV MUX with a 2nd-order Delta-Sigma ADC and an oscillator. This battery voltage measurement system was carried out on silicon using TSMC 1P3M 0.25 μm 60V HV CMOS technology.
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